CN107867254B

CN107867254B - Radar sensor assembly, bumper and vehicle

Info

Publication number: CN107867254B
Application number: CN201610844442.3A
Authority: CN
Inventors: 裴微微; 王洪安
Original assignee: Borgward Automotive China Co Ltd
Current assignee: Borgward Automotive China Co Ltd
Priority date: 2016-09-22
Filing date: 2016-09-22
Publication date: 2020-06-02
Anticipated expiration: 2036-09-22
Also published as: CN107867254A

Abstract

The present disclosure relates to a radar sensor assembly, a bumper and a vehicle, the radar sensor assembly (8) comprising a terminal block (1) and a sensor (2) mounted to the terminal block by a crush member (3). Because the crumple piece is arranged between the sensor and the terminal seat, the crumple piece can be crumpled after the sensor is stressed, so that the contact area generated by collision is concentrated on the bumper skin, and the generated collision energy can be absorbed by the bumper skin, thereby avoiding the fracture injury of the sensor with high hardness to the shanks of pedestrians. Therefore, the bumper provided with the radar sensor assembly does not need to avoid designing a radar sensor in the middle position, and does not need to modify an anti-collision beam, so that the safety of the whole vehicle is ensured.

Description

Radar sensor assembly, bumper and vehicle

Technical Field

The present disclosure relates to the field of radar sensors for vehicles, and more particularly, to a radar sensor assembly, a bumper using the same, and a vehicle using the same.

Background

The arrangement of the radar sensor on the bumper is a common configuration in vehicles for realizing functions of backing and other auxiliary driving, wherein, for example, in europe, there is mandatory regulations (EC) No78/2009) of calf collision, a part arranged at the calf height is required, and when a vehicle collides, the calf of a person is not allowed to be damaged, however, in the current research and development process, due to reasons such as arrangement position limitation and the use of front energy absorption foam or an anti-collision beam of the same platform, the middle two radar probes arranged on the front bumper cannot avoid the anti-collision beam, so that the hidden danger of calf fracture caused by potential safety hazard to pedestrians is often generated. At present, in order to solve the problem of shank collision, the method generally adopted by a whole factory is as follows:

1. the two middle radar sensors are removed, so that the technical defect that when the vehicle starts to run, objects with low heights in the front of the vehicle cannot be detected, and a chassis is scratched or an obstacle in the front of the vehicle is damaged; in addition, advanced parking assistance functions cannot be expanded, for example: cannot be expanded to the configuration for automatic parking.

2. Arrange two middle sensors department with the anticollision roof beam and carry out sunken processing, can have very big risk like this, when whole car carries out the front offset collision, the anticollision roof beam can be bent, and then can produce very serious injury to the driver after the accident appears

Disclosure of Invention

An object of the present disclosure is to provide a radar sensor assembly capable of collapsing upon an impact, a bumper using the same, and a vehicle using the same.

In order to achieve the above object, the present disclosure provides a radar sensor assembly including a terminal block and a sensor electrically connected to an internal element of the terminal block, with a crush member installed between the sensor and the terminal block.

Optionally, the crush member is a resilient member.

Optionally, the elastic member includes a sheet-shaped main body on which an elastic piece capable of elastically protruding and retracting is disposed.

Optionally, the sheet main body and the elastic sheet are integrally formed by an elastic material, an accommodating notch for accommodating the elastic sheet is formed in the sheet main body, and the elastic sheet protrudes outwards from one side edge of the notch.

Optionally, the sheet main body is circular, and the two spring pieces are symmetrically arranged about the center of the sheet main body.

Optionally, the elastic member is formed as an elastic pad, and a threading hole is formed in the elastic pad.

Optionally, the sensor is a piezoelectric sensor comprising a piezoelectric ceramic.

Optionally, the crush member is bonded between the sensor and the terminal block.

The present disclosure also provides a bumper, including the bumper body, install the radar sensor assembly that the present disclosure provided on the bumper body.

The present disclosure also provides a vehicle, at least one of a front bumper and a rear bumper of which is the bumper provided by the present disclosure.

Through above-mentioned technical scheme, owing to be provided with the piece that contracts of ulcerating between sensor and terminal seat, can make the piece that contracts of ulcerating contract after the sensor atress contract, the area of contact that the collision produced like this concentrates on the bumper skin, and the collision energy of production also can be absorbed by the bumper skin to avoid the sensor, especially great piezoelectric sensor such as piezoceramics of hardness to cause the fracture injury to pedestrian's shank. Therefore, the bumper provided with the radar sensor assembly does not need to avoid designing a radar sensor in the middle position, and does not need to modify an anti-collision beam, so that the safety of the whole vehicle is ensured.

Additional features and advantages of the disclosure will be set forth in the detailed description which follows.

Drawings

The accompanying drawings, which are included to provide a further understanding of the disclosure and are incorporated in and constitute a part of this specification, illustrate embodiments of the disclosure and together with the description serve to explain the disclosure without limiting the disclosure. In the drawings:

FIG. 1 is a partial view of a bumper provided in accordance with an exemplary embodiment of the present disclosure;

3 FIG. 32 3 is 3 a 3 schematic 3 cross 3- 3 sectional 3 view 3 taken 3 along 3 line 3 A 3- 3 A 3 of 3 FIG. 31 3; 3

FIG. 3 is a schematic diagram of a front view of a radar sensor assembly provided in an exemplary embodiment of the present disclosure;

FIG. 4 is a schematic top view of the radar sensor assembly of FIG. 3;

FIG. 5 is a cross-sectional structural schematic view taken along line B-B in FIG. 4 showing the crush member in the first embodiment;

FIG. 6 is a schematic perspective view of a crush member according to an example provided by the first embodiment of FIG. 5;

FIG. 7 is a schematic perspective view of another example of the crush member provided by the first embodiment of FIG. 5;

FIG. 8 is a cross-sectional structural schematic view taken along line B-B in FIG. 4, showing a second embodiment of the crush member.

Detailed Description

The following detailed description of specific embodiments of the present disclosure is provided in connection with the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present disclosure, are given by way of illustration and explanation only, not limitation.

In the present disclosure, unless otherwise specified, directional terms such as "upper, lower, left and right" are generally defined with reference to the drawing plane directions of the corresponding drawings. "inner and outer" refers to the inner and outer portions of the component profile.

As shown in fig. 1 to 8, the present disclosure is intended to design a retractable radar sensor assembly, and a bumper using the same, and a vehicle using the same. As shown in fig. 1 to 3, a radar sensor assembly according to an exemplary embodiment of the present disclosure includes a terminal block 1 and a sensor 2 electrically connected to internal components of the terminal block 1, wherein a circuit component such as a PCB is mounted in the terminal block, and the sensor 2 as a sensing component may be electrically connected to the PCB through a wire harness to complete signal transmission. Wherein, a terminal jack can be formed on the terminal base 1 to transmit signals to control elements such as a vehicle control unit through connection with other wiring harness plugs.

In the manner of mounting to the bumper 6, as shown in fig. 2, the bracket 7 may be used for assisting, specifically, the bracket 7 has a hollow cylindrical structure and a slot for clamping the radar sensor assembly is formed on an inner wall thereof, a head portion thereof may be embedded or bonded to the bumper, and a corresponding terminal seat may be designed with a card seat for clamping the slot, thereby completing the mounting of the radar sensor assembly 8. In other embodiments, the radar sensor assembly 8 may be attached to the bumper by bonding or the like. The sensor 2 is a sensing element of a radar sensor assembly, which is typically relatively stiff, such as a piezoelectric sensor comprising a piezoelectric ceramic used in ultrasonic radar sensors. The upper cover 5 may be fitted to the outer side close to the terminal block 1 to provide a protective function, and for example, a rubber boot may be fitted to the outer side away from the terminal block 1 to provide a protective function.

Therefore, in order to achieve the object of the present disclosure, in the present embodiment, the crush can 3 is mounted between the sensor 2 and the terminal holder 1. The crush member 3 is a member that can be compressed by a force, and when the crush occurs, the minimum force to which the crush member is subjected is smaller than the minimum force to which the crush can occur in the sensor and the terminal block. In the present embodiment, the crush can 3 is bonded between the sensor 2 and the terminal block 1 for easy mounting. For example, by coating both sides with 3M glue, respectively.

Therefore, the crumple piece 3 is arranged between the sensor 2 and the terminal seat 1, the crumple piece can be crumpled after the sensor is stressed, the contact area generated by collision is concentrated on the bumper skin, and the generated collision energy can be absorbed by the bumper skin, so that the sensor with high hardness, such as piezoelectric ceramics, is prevented from causing fracture injury to the shanks of pedestrians. Therefore, the bumper provided with the radar sensor assembly does not need to avoid designing a radar sensor in the middle position, and does not need to modify an anti-collision beam, so that the safety of the whole vehicle is ensured.

In addition, in order to ensure that the sensor 2 and the internal element of the terminal base 1, such as a PCB, can be electrically connected after the crumple piece 3 is installed, a threading hole 35 may be formed in the crumple piece 3. Alternatively, in other possible embodiments, the periphery of the crush can 3 can be notched to avoid the sensor 2 harness, or the crush can 3 can be sized smaller so as not to interfere with the sensor 2 harness passage.

In this embodiment, the crush member 3 can be an elastic member, i.e., an element having a spring back amount, such that the sensor can return to its original position even after an intentional or unintentional collision without the need to replace a new radar sensor assembly. In other possible embodiments, elements without a spring back may be used, such as a stent made of a material with a lower compressive strength.

As shown in fig. 5 to 7, in the first embodiment of the present disclosure, the elastic member includes a sheet-shaped main body 31 on which an elastic piece 32 that can elastically protrude and retract is provided. The elastic sheet has a smaller stress area, is easy to be stressed and elastically deformed relative to the sheet main body, thereby sensitively realizing the crumple under the stress condition. In other possible embodiments, a spiral spring or the like may be provided.

Specifically, in the present embodiment, for convenience of manufacturing, the sheet main body 31 and the elastic piece 32 are integrally formed by an elastic material, an accommodating notch 33 for accommodating the elastic piece is formed on the sheet main body 31, and the elastic piece 32 protrudes outward from one side edge of the notch 33. That is, the elastic piece 32 can be accommodated into the accommodating notch 33 after being pressed. The accommodating notch 33 is provided to allow the wiring harness of the sensor to pass through in some embodiments, thereby eliminating the need for additional threading holes. As shown in fig. 6, in an embodiment, the number of the elastic pieces may be one and located at the center of the sheet main body 31, and as shown in fig. 7, the sheet main body 31 is circular, and the number of the elastic pieces 32 is two and is symmetrically arranged about the center of the sheet main body. That is, the extending directions of the two spring plates 32 are opposite, so that the force applied to the sensor 2 is more uniform.

As shown in fig. 8, in the second embodiment of the present disclosure, the elastic member may also be formed as an elastic pad 34, i.e., the elastic member may be compressed as a whole and has a resilient action, wherein a threading hole 35 is opened on the elastic pad in order not to affect the wiring harness of the sensor 2. Alternatively, the elastic pad 34 may be a plastic pad, and in other embodiments, may also be other polymer elastic materials, such as polyurethane, natural rubber, and the like.

In conclusion, the radar sensor assembly provided by the present disclosure can realize the post-stressed collapse, and can be applied to any one of the front bumper or the rear bumper of the vehicle. For example, when the pedestrian protective bumper is arranged on a front bumper, when a collision occurs, a leg bone of the pedestrian is in contact with the front bumper, because the bumper is made of a soft material, energy generated by the collision is concentrated on a relatively hard sensor, and the sensor can move backwards through the crumple of the crumple piece, so that the contact area generated by the collision is concentrated on a bumper skin, and the generated collision energy can be absorbed by the bumper skin, thereby achieving the purpose of protecting the leg of the pedestrian.

While the present disclosure has been described in detail with reference to the drawings, the present disclosure is not limited to the details of the embodiments, and various simple modifications may be made to the technical solution of the present disclosure within the technical scope of the present disclosure, and the technical solution of the present disclosure is protected by the present disclosure.

It should be noted that, in the foregoing embodiments, various features described in the above embodiments may be combined in any suitable manner, and in order to avoid unnecessary repetition, various combinations that are possible in the present disclosure are not described again.

In addition, any combination of various embodiments of the present disclosure may be made, and the same should be considered as the disclosure of the present disclosure, as long as it does not depart from the spirit of the present disclosure.

Claims

1. A bumper comprises a bumper body and is characterized in that a radar sensor assembly is mounted on the bumper body and is positioned on the inner side of the surface of the bumper body, the radar sensor assembly (8) comprises a terminal seat (1) and a sensor (2) electrically connected with an internal element of the terminal seat (1), and a crumple piece (3) is mounted between the sensor and the terminal seat;

the crumple piece (3) is an elastic piece;

the elastic piece comprises a sheet-shaped main body (31), and an elastic sheet (32) capable of elastically protruding and retracting is arranged on the sheet-shaped main body.

2. The bumper according to claim 1, wherein the sheet-like main body (31) and the resilient piece (32) are integrally formed by an elastic material, a receiving notch (33) for receiving the resilient piece is formed in the sheet-like main body (31), and the resilient piece (32) protrudes outward from one side edge of the notch (33).

3. Bumper according to claim 2, characterized in that said sheet-like body (31) is circular and said tabs (32) are two and are arranged symmetrically with respect to the centre of the sheet-like body.

4. Bumper according to claim 1, characterized in that the elastic element is formed as an elastic pad (34) on which a threading hole (35) is provided.

5. The bumper of claim 1, wherein the sensor is a piezoelectric sensor comprising a piezoelectric ceramic.

6. Bumper according to anyone of claims 1-5 characterized in that the crush-member (3) is glued between the sensor (2) and the terminal block (1).

7. A vehicle characterized in that at least one of a front bumper and a rear bumper of the vehicle is a bumper according to any one of claims 1-6.